I used to think a girl talking about her boyfriend was disinterested. Due to some experiences, not anymore.
In a one on one situation, she starts talking about dating or boyfriend, she wants you to steal her.
REMEMBER the theme her mind is on. (For example, if she asks, "Are you gay?" her mind is on SEX! And most of the time she is wanting to shag you.) When she brings up dating and boyfriend, she is thinking 'relationship' and is hoping that you steal her, that by mentioning boyfriend that you are FIRED UP to hurry and steal her NOW before it is too late!
Many 'nice guys' think they are progressing when the chick tells them about their loser boyfriends or about guys in general. In actuality...
These guys have become Emotional Tampons!
The girls will vomit their emotions on you, and the nice guy emotional tampon becomes 'spoiled' and DUMPED to Nice Guy Graveyard!
The only way I can tell the 'uninterest' boyfriend talk from the 'interest' boyfriend talk is that the 'uninterest' boyfriend talk is all about how the chick feels (how Mr. Jerk did this and that to her, how she hates/loves him, etc.) while the 'interest' boyfriend talk is about what the THINGS (not feelings) the boyfriend did.
Women drop hints. Sometimes they'll drop a hint of their boyfriend and dating by showing to you that they are in high demand. Girls are stupid. They think if you know guys are after her that you will go after her too (because women will go after guys who have fan clubs. She is trying to give you social proof!).
Recently, I've had TWO encounters with this. First, a woman who liked me, sat close to me, and then blabbed about what her boyfriend was doing for her. Second, and more recently, a woman who was INFATUATED with me started talking about how all these guys were giving her flowers and how high demand she was.
My advice is to IGNORE the boyfriend/dating talk altogether. When you make the judgement for high interest or low interest, never rely on a single sign. Look for others, look at the whole picture. They will give you a better idea since it is difficult to tell when a woman is using you as an emotional tampon or trying to give you social proof.
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Pook
"As you think, you shall become."